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Finding the Fourth Proportional to 485,641.28, 670,193.34 and 267,875

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Solution

The fourth proportional to 485,641.28, 670,193.34 and 267,875 is: 369,672.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,641.28 : 670,193.34 = 267,875 : x
  2. Step 2: Convert to fraction form
    485,641.28/670,193.34 = 267,875/x
  3. Step 3: Cross multiply
    485,641.28x = 670,193.34 × 267,875
  4. Step 4: Simplify right side
    485,641.28x = 179,528,040,952.50
  5. Step 5: Solve for x
    x = 179,528,040,952.50/485,641.28
  6. Step 6: Final answer
    x = 369,672.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.